JPH0762395B2 - Concrete leveling equipment - Google Patents

Description

The present invention relates to a concrete leveling apparatus.

(Prior Art) Among concrete works for floors, roads, etc., work until the concrete is hardened is conventionally performed as follows.

First, install a ruler or the like that indicates the height of the concrete surface at the construction site such as the floor or road.

Next, concrete is poured into the construction site from a flexible hose or the like.

Next, a worker adjusts the excess / deficiency of concrete with a scraping and leveling jig while visually observing the ruler to perform a rough and leveling work.

Also, as part of the work is done mechanically, rulers that indicate the height of the concrete surface are placed parallel to each other on both sides of the construction site, and for concrete leveling with a shaker installed. There is a method in which the frame is hung between the rulers on both sides, concrete is placed at the construction site, and two workers placed at both ends of the concrete leveling frame move the frame to perform rough leveling. .

(Problems to be solved by the invention) However, in such a conventional method, since the height precision of the concrete surface is poor because all of them are manual, the work is heavy labor, and when the concrete area is large, it is often the case. Had to be secured and the construction time was long.

The present invention has been devised in view of the above circumstances, and an object of the present invention is to reduce the number of workers and shorten the construction time, maintain the height accuracy with high accuracy, and obtain a good appearance. It is to provide a concrete leveling device that can obtain a state.

(Means for Solving the Problems) The configuration of the present invention for achieving the above-mentioned object will be described with reference to the drawings corresponding to the embodiments.

The present invention includes a body 3, a trowel 5 having a predetermined length supported on the side of the body 3, and a wheel body 31 arranged in front of and behind the body 3.
A crawler 7 which is hung between the front and rear wheels 31 and runs the machine body 3 in a direction in which the trowel 5 flattens the concrete; and a power source 9 for driving the crawler 7.
The crawler 7 is the concrete leveling apparatus 1 which is arranged within the width of the trajectory of the trowel 5 as the machine body 3 travels and in which the ring 31 is filled with a gas lighter than air.

The trowel 5 can be arranged in front of and behind the crawler 7, and the trowel 5 can be provided with a vertical movement means for adjusting the height. Further, the height of the trowel 5 can be automatically adjusted. A section 35 can be provided.

Further, the crawler 7 can be divided into left and right parts, and a vibrating device 19 can be connected to the trowel 5.

(Operation) According to the present invention, the crawler 7 causes the machine body 3 to travel, and the trowel 5 automatically levels the concrete surface.

The weight of the machine body 3 is distributed over a plurality of bar arrangements via the crawler 7, and the weight of the machine body 3 is reduced by the gas enclosed in the wheel body 31 on which the crawler 7 is mounted. You can run on the formwork without sinking the muscles.

All the concrete surface that the crawler 7 has passed through is leveled by the iron 5, so that the concrete surface can be leveled without leaving after the crawler 7 has passed through.

Therefore, the number of workers can be reduced, the construction time can be shortened, the height accuracy can be maintained with high accuracy, and a good bare state can be obtained.

If the iron 5 is arranged in front of and behind the crawler 7, the concrete can be leveled in any direction.
Further, if the vertical movement means is provided, the height of the trowel 5 can be easily adjusted, and if the control section 35 is provided, the height of the trowel 5 can be automatically adjusted.

In addition, if the crawler 7 is divided into left and right parts, the airframe 3
The direction of the can be changed, and the efficiency of the leveling work can be improved by providing the vibration device 19.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a side view of the concrete leveling device, and Fig. 2 is the same.
A front view, FIG. 3 shows the same plan view, and FIG. 4 shows the same perspective view.

1 is a concrete leveling device, concrete leveling device 1
Is the machine body 3, the iron 5 for leveling concrete, and the machine body 3
And a motor 9 for driving the crawler 7 and the like.

The machine body 3 is provided with a frame body 11 made of a square pipe. Legs 13 made of a square pipe are respectively hung from both ends of the front and rear pipes 11A forming the frame body 11, and the front and rear portions of the left and right pipes 11B. A supporting piece 15 is hung from each of them.

The trowels 5 are arranged in front of and behind the machine body 3, respectively. The trowel 5 has a predetermined length, and in the embodiment, it is arranged so as to extend in a direction substantially orthogonal to the traveling direction of the machine body 3.

The trowel 5 includes a horizontal surface portion 5A and an upright surface portion 5B that rises from the front-rear intermediate portion of the horizontal surface portion 5A.

A support 17 made of a square pipe is erected on a portion of the trowel 5 corresponding to the leg 13 and a vibrator 19 is attached to an intermediate portion of the trowel 5 in the longitudinal direction.

The column 17 is incorporated in the corresponding leg 13 so as to be vertically slidable. Then, the male screw member 21 supported rotatably and axially immovable inside the leg body 13 is screwed into the screw hole of the female screw member 23 fixed inside the column 17, and the leg body is rotated by the rotation of the male screw member 21. The column 17 is configured to move up and down with respect to 13.

For rotation of the male screw member 21, the motor 25 is attached to the frame body 11,
The belt pulley mechanism 27 connects the upper part of the male screw member 21 and the motor 25.
It is done by connecting with.

In the embodiment, the heights of the front and rear trowels 5 are individually adjusted by the respective motors 25 at the left and right ends of the trowels 5, and the male screw member 21, the female screw member 23, the motor 25 and the like constitute vertical moving means for vertically moving the trowel 5. Has been done.

Between the front and rear trowels 5, under the frame body 11, there are arranged front and rear wheels 31 at intervals, and a gas lighter than air, for example, helium gas, is enclosed in each wheel 31. The crawler 7 is mounted over the front and rear wheels 31.

The crawler 7 is formed with a width shorter than the length of the iron 5,
Further, the device 1 is arranged so as to be within the movement locus of the trowel 5 due to the traveling of the device 1.

In the embodiment, two tubular bodies 31 each having a tubular shape are arranged side by side on the left and right, and two crawlers 7 are respectively mounted on the left and right annular bodies 31.

The left and right wheels 31 are rotatably supported by axles 31A, respectively.
1A has both ends thereof supported by the support pieces 15.

The motors 9 are attached to the left support piece 15 in the front of the traveling direction and the right support piece 15 in the rear of the traveling direction so that the left crawler 7 and the right crawler 7 can be individually driven by the left and right motors 9. To configure.

33 is a level sensor, 35 is a control unit, and four level sensors 33 are installed upright at a predetermined height near each corner of the frame body 11, and the control unit 35
Is arranged on the frame 11.

The level sensor 33 receives, for example, a signal from a laser light emitter 41 installed at an appropriate place around the floor surface as shown in FIG. 5, and the control unit 35 controls the current height of the iron 5 based on this signal. The motor 25 is driven while making corrections to adjust the height of the iron 5 during leveling of concrete.

FIG. 6 shows a block diagram of the control unit 35.

The control unit 35 is composed of a microcomputer, and calculates,
A CPU (central processing unit 1) 35a having a control function, a read-only ROM 35b for storing a traveling motor 9, a height adjusting motor 25, a processing program for controlling the exciter 19, and other data, and a CPU 35a. It is composed of a writable and readable RAM 35c for storing the calculation result in (1) and data from an input device, an input interface 35d and an output interface 35e, which are connected to the CPU 35a via a bus 35f.

The input interface 35d has a level sensor 33 for detecting the laser light from the laser emitter 41 for the reference level.
And a receiver 51 for receiving the operation signal of the leveling device 1 is connected.

Further, a transmitter 52 for transmitting the operation signal of the leveling device 1 via the antennas 51A and 52A is provided corresponding to the receiver 51, and the transmitter 52 is provided with a switch, a push button, etc. The part 53 is connected.

Further, the motors 9 and 25 and the exciter 19 are connected to the output interface 35e via the drivers 9a, 25a and 19a, respectively, and the height display device 54 is further connected.

In the control unit 35, when an operation start switch (shown in the figure) on the operation unit 53 is turned on, a command signal corresponding to this switch is transmitted through the transmitter 52. This transmitted signal is the receiver
The start command is received by the driver 9a, 19a based on the operation start command signal at the input interface 35d.
To the driving motor 15 and the exciter 19
To start.

On the other hand, the level sensor 33 receives the laser beam emitted from the laser emitter 41, and the level sensor 33 detects the current level for the laser emitter 41. This detection level data is fetched by the CPU 35a through the input interface 35d, and a preset reference value and the current level value are compared and calculated, and the comparison result is output to the driver 25a to operate each motor 27 to operate the iron. The height of 5 is controlled to the reference height. When the start command is fetched by the CPU 35a, the driver 25a of the motor 25 is held in the enabled state.

Next, the operation of the leveling device 1 will be described with reference to FIG. In the example, a case where a concrete floor surface is formed on the Omnia plate A will be described.

First, the iron 5 is set to a predetermined height via the level sensor 33, the motor 25, etc., and the vibrating machine 19 vibrates the iron 5.

Next, concrete is poured substantially evenly in front of the leveling device 1, and the motor 9 is driven by operating the operating portion 53 to move the leveling device 1 forward (direction of arrow B). To go.

In this case, the height of the iron 5 is the level sensor 33, the control unit 35,
The height is maintained at a predetermined height via the motor 25 and the like, and the details of this height control will be described with reference to FIGS. 6 and 7.

With the initialization of the control unit 35, the flowchart shown in FIG. 7 starts.

First, in step S1, the motor 25 is operated by operating a manual height adjustment switch (not shown) on the operation unit 53 to set the height of the iron 5 to a desired height. The operation command signal at this time is transmitted to the driver 25a through the transmitter 52, the receiver 51, and the control unit 35.

In the next step S2, the laser light emitter 41 is set toward the level sensor 33 of the leveling device 1, and the laser beam at this time is detected by the level sensor 33. The detected value is stored in the RAM 35c as an initial value (reference value) of the iron 5 with the height set (step S3).

In the next step S4, the level control is started based on the operation of the operation unit 53, and in the next step S5,
The operation of the leveling device 1 is started.

When the leveling device 1 is operated, the process proceeds to step S6, where the level sensor 33 detected by receiving the laser beam is used.
The detected value of 5 is read as the current iron 5 level value into the CPU 35a at every predetermined calculation cycle. Then, in the next step S7, the difference between the current iron 5 level value and the preset initial value is calculated.

In step S8, the deviation D as the calculation result is D = 0, that is, the current height of the iron 5 is equal to the initial value, or D> 0, that is, the current height of the iron 5 is larger than the initial value, or D
<0, that is, it is determined whether the current height of the iron 5 is smaller than the initial value.

If it is determined that D = 0, the process returns to step S6.

When it is determined that D <0, the process proceeds to step S9, and the rotation angle of the motor 25 is calculated and set according to the deviation D between the current height of the iron 5 and the initial value.

Then, in the next step S10, the motor 25
Is driven in the rising direction, and in the next step S11, it is determined from the rotation angle whether the rising is completed. If "NO" here, the process returns to step S10, and the processes of steps S10 and S11 are executed. Further, when it is determined to be "YES", the process returns to step S6.

On the other hand, if D> 0 is determined in step S8, the process proceeds to step S12, and the rotation angle of the motor 25 is calculated and set according to the deviation D between the current height of the iron 5 and the initial value.

Then, in the next step S13, the motor 25
Is driven in the descending direction, and in the next step S14, it is determined from the rotation angle whether or not the descending is completed. If "NO" here, the process returns to step S13, and the processes of steps S13 and S14 are executed. When it is determined to be "YES", the process returns to step S6 to read the height of the iron 5 again.

The above operation is similarly performed at the left and right ends of the front and rear trowels 5, respectively, and the height of the trowel 5 is maintained constant by individually controlling the heights at the left and right ends of the trowel 5.

As the leveling device 1 travels, concrete is scraped off to a predetermined height on the horizontal surface portion 5A of the trowel 5. Further, the scraped off extra concrete is pushed forward by the elevation portion 5B.

In this case, the trowel 5 at the front in the traveling direction mainly serves to smooth and level, and the trowel 5 at the rear in the traveling direction mainly serves to smooth and smooth.

Although the crawler 7 travels on the concrete surface through which the trowel 5 passes in the traveling direction, the weight of the leveling device 1 is equal to that of the front and rear wheels.
Since it is dispersed by 31 and crawler 7, Omnia plate A
The crawler 7 runs without causing the reinforcing bars arranged above to collapse.

Further, since the crawler 7 is arranged with a contour that fits within the width of the trajectory of the trowel 5, after the crawler 7 has passed, it is erased by the trowel 5 behind in the traveling direction, and the crawler 7 does not leave behind after passing. It can even out concrete surfaces.

In this embodiment, the height of the trowel 5 at the front in the traveling direction is set to be slightly higher than the height of the trowel 5 at the rear in the traveling direction. That is, the convex portion on the surface of the crawler 7 sneaks into the concrete until it comes into contact with the bar arrangement, and the trowel 5 in front of the traveling direction
Although the concrete surface that has been smoothed by means of unevenness corresponding to the unevenness of the surface of the crawler 7, the amount of concrete that is smoothed by the trowel 5 at the rear of the traveling direction is secured and smoothed by the trowel 5 at the rear of the traveling direction. A flat concrete surface is obtained by leveling.

Therefore, according to the present embodiment, since the concrete surface is automatically and mechanically leveled, a flat concrete surface in a good exposed state can be obtained, which reduces the number of workers and shortens the construction time. The height accuracy can be maintained at high accuracy.

Further, since the crawler 7 is used and the ring 31 on which the crawler 7 is hooked is filled with a gas lighter than air, it is advantageous in running, and the device 1 is mounted on the reinforced formwork before concrete placement. It can run freely and the device 1 can be easily moved.

Further, in the embodiment, the trowel 5 is arranged in front of and behind the crawler 7, so that the concrete can be leveled even when traveling in any direction. Depending on the conditions for placing concrete, the concrete surface may be obtained by traveling several times.

Further, since the vertical movement means is provided in the embodiment, the height of the trowel 5 can be easily adjusted. Further, since the vertical movement means is driven by the controller 35, the height of the trowel 5 can be adjusted. Can be done automatically.

Further, since the crawler 7 is divided into left and right parts, the direction of the machine body 3 can be changed by reversing the driving directions of the left and right crawler parts 7.

Further, since the vibration exciter 19 is provided, the efficiency of the leveling work can be improved, and the finishing accuracy can be further improved by changing the frequency and the traveling speed according to the change of the slump and the like.

The shape of the trowel 5 is not limited to the linear shape, and may be bent in a C shape in plan view, or the front and rear shapes may be different, or the trowel 5 may be orthogonal to the traveling direction. Instead, it is optional that it is arranged so as to be inclined.

(Effect of the invention) As is clear from the above description, according to the concrete leveling apparatus of the present invention, it is possible to reduce the number of workers and the construction time, and it is possible to maintain the height accuracy with high accuracy, A concrete surface that is in good condition can be obtained.

[Brief description of drawings]

Fig. 1 is a side view of the concrete leveling device, and Fig. 2 is the same.
Front view, FIG. 3 is the same plan view, FIG. 4 is the same perspective view, FIG. 5 is an explanatory view of the usage state, FIG. 6 is a block diagram of the control unit, and FIG. 7 is the iron height. It is a flow chart at the time of adjusting. In the figure, 1 is a concrete leveling device, 3 is a machine body, 5 is a trowel, 7 is a crawler, 9 and 25 are motors, 19 is an exciter, and 35 is a control unit.

Claims (6)

[Claims] 1. A trowel supported on the machine body side and having a predetermined length, a wheel body arranged in front of and behind the machine body, and a direction in which concrete is leveled by the trowel, which is hung between the front and rear wheel bodies. A crawler for traveling the airframe, and a power source for driving the crawler, the crawler is arranged within the width of the trajectory of the trowel as the airframe travels, and the wheel has a gas lighter than air. A concrete leveling device characterized by being enclosed. 2. The concrete leveling device according to claim 1, wherein the trowel is arranged in front of and behind the crawler. 3. The concrete leveling apparatus according to claim 1, further comprising vertical moving means for vertically moving the iron. 4. The concrete leveling apparatus according to claim 3, further comprising a control section for driving the vertical movement means so that the iron has a desired height. 5. The concrete leveling apparatus according to claim 1, wherein the crawler is divided into left and right parts, and the left and right parts are individually driven. 6. The concrete leveling device according to claim 1, wherein a vibrating device is connected to the iron.